Interpolymers

Abstract

Interpolymer of a polymer of unsaturated olefinically monomers without carboxylic groups and a polymeric surface active agent.

What is claimed is:  
     
       1. An interpolymer of 
       (1)  
       (a) at least one olefinically unsaturated monomer without carboxylic groups containing at least one activated carbon-to-carbon olefinic double bond and  
       (b) 0.001 to 10% by weight of a crosslinking monomer being different from (a) having at least two ethylenically unsaturated crosslinking monomers, and  
       (2) 0.001 to 20% by weight based upon the weight of the monomers (a) of at least one steric stabilizer having at least one hydrophilic moiety and at least one hydrophobic moiety, selected from the group consisting of  
       linear block copolymeric steric stabilizers, having a hydrophobic moiety having a length of more than 5 nm and being defined by the following formula:  
       
         
           C w —(B—A—B y ) x D z    
         
       
        wherein  
       A is a hydrophilic moiety having a solubility in water at 25° C. of 1% or greater, a molecular weight of from 200 to 50,000, and selected to be covalently bonded to B;  
       B is a hydrophobic moiety having a molecular weight of from 300 to 60,000, a solubility of less than 1% in water at 25° C., capable of being covalently bonded to A;  
       C and D are terminating groups which can be A or B, can be the same or different groups,  
       w is O or 1;  
       x is an integer of 1 or more,  
       y is 0 or 1, and  
       z is 0 or 1,  
        random copolymeric comb steric stabilizers, being defined by the following formula:  
       
         
           R′—(Z) m —(Q) n —R 2    
         
       
        where  
       R′ and R2 are terminating groups and may be the same or different and will be different from Z and Q,  
       Z is a hydrophobic moiety having a solubility of less than 1% in water at 25° C.,  
       Q is a hydrophilic moiety, having a solubility of more than 1% in water at 25° C., and  
       m and n are integers of 1 or more, and are selected such that the molecular weight is from 100 to 250,000, and  
       mixtures thereof.  
     
     
       2. The interpolymer of  claim 1  wherein said steric stabilizer is present in an amount of 0.01 to 10% by weight based upon the weight of monomers. 
     
     
       3. The interpolymer of  claim 1  wherein said steric stabilizer is present in an amount of 0.2 to 6.0% by weight based upon the weight of said monomers. 
     
     
       4. The interpolymer of  claim 1  wherein said block copolymer is a block copolymer of 12-hydroxystearic acid. 
     
     
       5. The interpolymer of  claim 4  wherein said polymer of 12-hydroxystearic acid is a block copolymer with polyethylene oxide. 
     
     
       6. The interpolymer of  claim 4  wherein said polymer of 12-hydroxystearic acid is an ABA block copolymer.